Currently progressing on heroic garrosh 10man and while we've been able to get through to the final bonus phase before we still have trouble getting in to phase 2 consistently and cleanily. Besides the first intermission, one of our bigger issues is dealing with the adds that spawn in phase one. At this point we have the DPS to beat the second iron star, but not quite enough to beat the second bunch of adds, and it's this second bunch we are having problems dealing with. Half the time we'll end up losing someone randomly from getting stomped by a fixating add and wasting an early brez.
How do people deal with the adds? Ideally we'd get them to 40% and let the iron star take care of the rest, but the 10 secs between them spawning and the star is a bit dicey. Any tips?